treating plywood for tiling

[maffro]

i am tiling round the bath/shower and have fitted sheets of ply round the bath to give me a nice flat surface to tile on. i have read that you use pva to seal the ply before tiling is this right? i have a bottle of pva but have a number of options for dilution, 4:1 waterva has been suggested on websites and this is an option on the bottle. any help would be appreciated

 

[chappers]

no not PVA some adhesives can be used straight onto wood some require a primer use the primer from the manufacturer of the adhesive.

 

[Moz]

maffro
As chappers says it all depends which tile adhesive you use ... some say NO as the adhesive can sometimes fail
I always used Bal FASTFLEX , an never had any problems with it..

http://www.bpindex.co.uk/manf.html?id=1060

 

[stevedonaghadee]

Moz,

You say that you have used Bal Fastflex. Do I need to prime the exterior grade plywood prior to use? I intend to use Bal Fastflex to lay ceramic floor tiles in my bathroom

There is so much conflicting information for we novices!

Thank you

 

[Moz]

No ,